Printing machine



March 30 1926. 1,578,962:

. J. S. DUNCAN PRINTING MACHINE Filed April 19, 1924 5 Sheets-Sheet 1 dig.

March 30 1926.

' J. 5. DUNCAN PRINTING MACHINE 5 Sheets-Sheet 2 Filed April 19, 1924 :1 I- RQ March 30, 1926.

J. S. DUNCAN PRINTING MACHINE Filed April 19, 1924 5 Sheets-Sheet 3 March 1926.

8,962 CA v PRINTING MACHINE Filed April 1924 5 Sheets-Sheet 4 March 30 1926. 1,578,962

J. S. DUNCAN PRINTING MACHINE Filed April 19, 1924 I 5 s etg-sheet 5 Fatented Mar. 30, 1926.

v UNITED STATES.

PATENT-'- OFFICE.

JOSEPH s. DUNCAN, or CHICAGO, ILLI OIS, Ass'ICNoR T AnnnnssoeRAPII COMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PRINTING MACHINE.

Application filed April 19, 1924. Serial Kai-{07,651.

To all whom it may concern: I

Be it known that I, JOSEPH S. DUNCAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain newand useful Improvements in Printing Machines, of which the following is a specification.

This invention relates to printing machines and is particularly designed for use in a machine of the type disclosed in my Patent No. 1,481,860, January 29, 1924. In that patent there is shown a machine for printing addresses in duplicate, triplicate, or other predetermined number of times.

In such a case, as for example in printingelectric light and gas bills where usually the same address is printed on different parts of the bill, it is sometimes found necessary to print diflerent addresses on different ,parts of the bill instead of duplicate addresses.

It is therefore the object of my invention to provide a printing machine of the general type disclosed in my aforesaid patent,

25 which-will permit printing of the same address a selected number of times, or which will print different addresses on the same bill or the. like, the operation of the mechanism being controlled. by means on the printing devices'or plates.

Other objects will be in partapparent andin part pointed out during the process of the description. I I Referring to the drawings forming a part of this specification,

Fig. 1 is a plan view of my machine.

Fig. 2 is a sectional view taken on the line 2'2 of Fig. 1.

Fig. 3 is a section taken on the line 3--3 of Fig. 2.

Fig. 4 is a view similar to that of Fig. 3, showing the parts in different positions. Fig. 5 is an elevation of a portion of my machine looking from the left of Fig. 1.

Fig. 6 is a viewsimilar to Fig. 5, showing the parts in a different position, and

Fig. 7 is a view showing some of the parts of Figs. 5 and 6 in still another position.

Power is applied to my. machine through pulley 1 which, by the selective gearing 2,

operates the paper feeding mechanism enclosed at3. This feeding mechanism forms no part of my present invention and will not be further described. The selective gearing 2 may be of any desired ratio, as 1:1, 2:1 or 3:1, as described in my aforesaid patent. Through beveled gearing 4 is driven shaft 5 and through other eveled gearing 6 isdriven shaft-7. ,The shaft 5 is driven in this embodiment at the ratio of 1:1, and the shaft 7 will, of couise, be

of the selective gearing 2. In this embodiment this ratio is 2 :1 giving the shaft 7 two rotations to one for the shaft 5. Obviously, any plther ratio which is desired may be provide ing rollers 9 which bear on said cams on opposite sides of the shaft 5 and are mounted on the arm 10 pivoted at 11 on the frame of the machine. The arm 10 is connected by link 12 to arm.13 on rocker 14 pivoted on hearing 15. The rocker 14 carries arms 16 to operate the inking device 17. In Fig. 3 said device is shown in the position wherein ink from the source 18 is being applied to pads 19, andin. Fig. 4 the rocker is shown in the position wherein the pads ,19' are apply ing ink to the printing devices or plates 20.

The plates 20 are fed from magazine 21 under inking device 19 and to platen 22'where impression is made therefromon the paper fed at right angles to the course of travel of the plates by means of the paper feeding mechanism, a portion of which'is'shown at 23. The means for feeding the plates com prise chains 24 passing over sprockets 25 at one end of'the machine and sprockets 26' at the other end thereof.

Referring particularly to Figs. 5, 6 and motion is imparted to chain 24 by an intermittent rotation of sprockets 26 provided by engagement of,pawl 27 with pins 28 spaced circumferentially of the sprocket/26. The pawl 27' is pivotally mounted on the member 29 fast on rocker 14.

In the operation of the mechanism thus far described, each rotation of shaft- 5 will result in one oscillation of rocker 14, as will be evident, this oscillation resulting in movement of the inking device from the position shown in Fig. 3 to that s'hownfin Fig. 4, and back to that shown in. Fig. 3. f The shaft driven at a ratio depending upon the ratio Secured on the shaft 5 are cams 8 operat- 7 is being rotated at one revolution for every two revolutionsf-of shaft 5. Said shaft has mounted thereon cam 30 against which bears roller 31 mounted on'lever 32 pivoted at 33. The other end of said lever 32 is forked, as shown at 34, to embrace pin 35 on the end of lever 36 pivoted at $37. The other end of lever 36 is pivoted to link 38 which in turn is pivoted to hell crank lever 39, one end of which forms a cam. 40. The roller 31 isurged into engagement with the periphery of cam 30 by means of spring 41. When in the'position shown in Fig. 5, feed of the sprocket 26' by pawl 27 is prevented by means of the pin 42 on said pawl riding over the surface. of cam 4i).

' During continued rotation of said shaft 7,

' in a about to be fed into by the end of the cam 40, striking it it moves to the ,The cam 30 in t e present instance is .de-

however, the roller 31 will drop into the depression 43 of the cam 30 and through the mechanism just described the cam.40"

which the platenwill brought into contact therewith, as shown in Fig. 6, by means of cam 46. acting on roller 47. The member 48 is shown raised in Fig. 5 to permit move- 1 ment of a. latekinto position, which move- -ment has ust taken place when the said giember .48 is lowered to position shown in i .6. v e mechanism so far described is substantiall the same as that described n my aforesai PatentNo. 1,481,866, 'in' hich it was explained that the cam 30 and other mechamsms may be desi ed -topermit the the one plate.

number impressions from In Figs. and 6, the mechanism is. shown in the positions that itnormally takes when rinting two impressions from one plate. have provided means whereby the cam will be rendered inoptaking of any erat-ive and the roller 31 will be brought'to bear directly on the shaft 7 so as to permit I another plate to befed into position after one impression has been taken by platen 22 so that different addresses and the like maybe printed in place of dupl cate -addresses. It

of the recess 43 on cam 30 is tangent with the circumference of the shaft 7 and I have .will be noted that the bottom provided means for moving the roller 31 axially of the shaft 7 when it reachestlus depression whereby it will take 'the position shown in 7 and thus maintain the feedmg means 1n the operative" position shownin Fig. 6'.

Referring now. particularly to Figs. 2, 3 and 4, pivoted at "49von a fixed part of the machineis a rocking member 50 normally held in the spring 51. ivotally mounted on said rocker 50st, 52 is a lever53 carrying at one end a link 54 pivoted to latch 55 controlling member 56, which in turn is carried on rock shaft 57. Member 56 and rock shaft 57 are normally urged toward the position shown in Fi 4 by means of' spring 58 but are locke in osition shownv in Fig. 3 by the latch mem er. The right hand end of the osition shown in Fig. 3 by lever 53, as appearing in Figs. 3 and 4, carr1es a support 59 for a plurality of pins 60. v p

The use of these pinsis disclosed in .my aforesaid patent and it is only necessary to note here that if one of the plates 20-is pro 'vid'ed with a tab 61 one of the pins 60 will come in contact therewith upon depression 'of the support 59, as will be presently described. Carried onthe inking device 17 is osition of.

a pin 62 which, when in the Fig. 4, strikes the headed mem erl 63 carried by the rocker 50, thus depressing the sion "64 provided for their rece tion, the

lever 53 will be rocked about itspivot 52 by spring 53? maintained in the. position shown in Fig. 3. If, however, a plate carrying a tab 61. is in not be lowered, and as the pivot 52 is lowered with the rocker 50, the left end of lever 53 will also be lowered, thus releasing the latch 55-and permitting rotation of the rock shaft 57 to the position shown in Fig, 4. I Carried on the right end of'sald shaft 57 as viewed in' Fig. 2, is'an arm 65 (see also Figs. 5,6 and 7) which arm 65 is normally held in the ositions shown in Figs. 5 and 6. On the end ing at its lower end a lever 67 pivoted to the frame of the machine at 68. It will be plain now that u on rockin of the shaft 57 the arm 65 wil be carrie with it to the position shown in Fig. 7. The lever 67 in its {movement to thepositio'n shown in F ig. 7

and in dotted linesin Fig. 2 will come to rest against the surface 69 of cam 70' and willbe' forced by said cam surface against the end of shaft 71 carrying roller- 31. The lever 67 is looselynpivoted and held on its pivot by s ring 72,) as shown in Fig. 2,

ermitting t is len thwise haft 71- and cam 31 ast thereon are normally'held by means of plate 73 hearing against the collar 74 on said shaft and tensioned by and thus the latch 55 will be movement.

lace under the support 59, the support can of arin 65 is pivoted a link 66 carryin the position shown in Fig. 2

returned to its position in contact with the edge of the cam by means of spring 75.

The left end of the rock shaft 57, as viewed in Fig. 2, isprovided with a roller .76 con-' tacting with stop 7 7. p

The operation of the machine has been fully brought out in the plrogress of the description and it is not be 'eved necessary to repeat it here in detail. It may be briefly summarized, however, as follows The paperis fed by means of the feeding I mechanism, indicated generally at 3 and 23,

to position under the platen 22 in such a manner as to be held in position under the platen-while an impression or impressions are being taken. Printing devices or plates are red from the magazine '21 in .a direction at right angles to the direction in which the paper is fed and a device is brought into osition under the platen and paper after it as been inked by the inking device shown in Fi 3 and 4, and-remains in said position while a plurality of impressions are normally made therefrom. It is understood that the paper is given a feedin movement between' said impressions. en it is desired to make only one impression from each plate or device, that plate is furnished with a tab 61 which actuates the latch member to permit rocking of rock shaft 57, which in turn disengag'es the roller 31 from the cam 30 during one revolution of the said cam and the shaft? on which it is mounted.

1 After this one revolution the spring causes return of the roller 31 to the periphery of the cam 30., n

I am aware that changes in the form,flconstruction and arrangement 0f arts may be position on made without departing from t e spirit and without sacrificing the advantages ofthe in: vention and I reserve the right to. make all such changes as fairly fall within the sco e ofthe following claims I claim y 1. In a printin machine, a printing :device, means to ta e a plurality of impressions therefrom, and means to" alter said first named means inorder to takea single sai a printing device into printing position, means to take a plurality of impressions therefrom while in said position, and means to alter said feed to permit a single impression from said printing device, said altering means being controlled by said printing device.

' 4. In a printing machine, means for feeding printing devices successively into printing position, means rendering said feeding means inoperative for a period of time, and means vto alter the number of feeding operations taking place between said inoperative eriods, sai a y said printing devices. a

5. In a rinting machine, means for operating a p aten, means for feeding printing devices to position under said platen, means for taking one or a plurality of impressions from said rintingdevice by said platen selectively, t e selection being made by said printing device.

6. In a printing machine, means for feeding a printing device to position under a platen, means for-inking said printing device before coming to said position, and means operated by said inking means to alter said printing device feed.

7. In a printin machine, means for feeding a printing evice to' position under a platen, means for inking said printing device before coming to 'saidposit-ionfand means 0 erated by said inking means to alter sai rinting device feed, said altering means being controlled by said printing device.

-8. In a printing machine, means for feeding a printing device into Printing position, means for rendering said eeding means inoperative, a cam to cont 1 said last named means, and means contro 1 ed by' said print-'- ing device for rendering said cam means inoperative.

9. In a prmtingmachine, means for feeding a printing device into printing position,

a laten for taking an impression from said printing device, an inking device for inking said device, means to alter said feeding means. operated b said inking device and controlled by sai printing device.

- 10. In a printing machine, means for feeding a printing device, means for rendering said feeding means ino determined nterval, sai comprising a cam and rative for a prelast named means a roller contacting with the periphery of said cam, means for var ing e period of time during which feeding means is operated comprising means for moving said roller axially of said cam and out of engagement therewith.

11. In a printin machine, means for feeding the printing evice into printing position comprising a sprocket'wheel, a plurality of P1115 circumferentially mounted on said sprocket wheel, a pawl adapted to entering means being controlled l gage successively with said pins, and means for holding said pawl out of engagement with said pins to render said feeding means inoperative.

12. In a printin machine, means for feeding the printing device int-o printing position comprising a sprocket wheel, a plurality of pins circumferentially mounted; on said sprocket wheel, a pawl adapted to engage sficcessively'Wit-h said pins, and means for 10 holding said pawl out of engagement with trolled by said printing device.

JOSEPH s.- DUNCAN. 

